Jack for motor-driven vehicles



APP'LICATI'GN."limitiA` DEC'. 27, 192'0;

Patented June m, 1921.

3 SHEETS-SHEET l.

E. Vl. SCOTT.

'JACK FOR MOTOR DHIVEN VEHICLES.

APPLICATION FILED DEC.27,1920.

Patented June 21, 192i.

mambo.

3 SHEETS-SHEET APPLAICATION FILED DEC.27,1920.

1921 3 SHEETS-SHEET 3.

Patented June 21,

y a jack for the Villamil Jaca `reir inercia-nerven viii-ricains.'

ieaaaae.

' To cZZwLQm i't-may concern: Beit known that l, EDWARD M. SCOTT, re-

siding at Oberlin, in the county of Lorain and State or Ohio, a citizen of the United States, have invented certain new and useful improvements in Jacks for Motor- Driven Vehicles;v and Ido hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains .to makeand use the same.

My invention relates to an improvement in vehicle jacks and more particularly to a jack to be used in connection with an automobile orsimilar motor driven vehicle.

The object-of theinvention is to provide urpose of elevating vehicle `and the w eelsthereof to remove. the weight of the `vehicle from the tires when the vehicle visin storage, when it is desired to elevate oneormoreot the wheels in order to facilitate repairs to a tire 'or replace it by a new tireor for any otherpurpose.

A furtherobje'ct is to'provide a jack per-- manently secured toa vehicle and forming' a built-in or integra-l part thereof.

A further object is to provide a jack of the character described which is capable of being actuated or operated bymeans of the motor of an automobileor 'other motor driven vehicle and which is under the complete control of the operator of such vehicle at all times. y

A furtherfobject is to provide means for preventing the unauthorizeduse or opera tion 0i' an automobile by temporarily disconnecting someV of the operative parts thereof. A i y y A still further object is tol provide a jack which is exceedinglyA simple7 inexpensive and durable in construction, easy in operation and effective in results.

The invention consists in the several features and in the construction, combination and arrangement of such features as is more fully hereinafter :described -and claimed. ,Referring to the drawingsz- F igure 1 is a plan view ofniy invention applied to anautomobile of conventional type. f

Fig.` 2 is a. vertical' transverse sectional View on the plane indicated by the line 2-2 of Fig. 1. i

Fig. 3 is an enlarged detail sectional view of one of the jack yelements or units, the

Specification of :Letters Patent. v apiiiioatimi 'eiefi December a7, ieee.A

Patented June 2li, 11.9211@ Serial No. 433,253.

plane of the section being the same as that of Fig. 2.

F ig. 4 is an enlarged detaillsectional view of theuppei portion ofA one of the jack screws. Y

Fig-s. and 6 are transverse detail sec tional views on the Fig. 3.

iFig. 7 islaJ horizontal sectional view on the plane' indicated by the line 7-7 ot Fi .2.

ig.. 8 'is a. .detail sectional view on the plane indicated by the line S-v-S of .Fiom l.

Fig. 9 .is a detail sectional view onbthe plane indicated by the line 9-9 of Fig. l. 'Figs 10 and 11-are detail edge and side views respectively of a hanger for the transmission shaft by which jack operating motion is communicated from the rear counter shaft to the iront counter. shaft. F ig. 12 1s a detail view partly in section of the controlling lever and connection.

Fig-13 is1 a detail sectional view on the plane indicated by the line 13-13 of Fig. 12.

Fig. 14 is a detail sectional view on the 'pane indicated by the line 141-14L of Fig.

ln the drawings, in which like reference characters denote like parts throughout the several views, 9 represents an automobile of conventional well known tvpe, 10 the longitudinally extending drive ushaft vmounted in the usual' manner and extended from the transmission gearing, the casing `for same being` shown at 11. The transmission gear ing being preferably actuated by means of a lshift gear lever 12 or any preferred equivalent thereof, as in the ordinary practice,A and movably mounted upon and keyed to said drive shaft is a pinion 13 for mvef ment into and out of engagement with a drive gear 14 located in the differential gear `casingv 15, said pinion 13 being ot the double type as shown-clearly in Fig. 7 andV adapted for alternative engagement with said drive gear 14 and bevel pinions 16 which are carried respectively lby the independently revoluble members 17 of a transverse countershaft of which a duplicate 18 may be arranged at the iront of the machine as shown in Fig. 1, the front counter shaft for example receiving motion from the' rear counter shaft through a longitudinally disposed transmission shaft 19 having terminal I planes indicated re- -spectively by thelines 5 5 and 66 of rear and front pinions and 21 meshing respectively with pinions 22 and 23 on said counter shaft. The transmission shaft may be yieldingly supported from the frame or chassis at anintermediate point by means of a'hanger bearing vindicated in Fig. 1 at 24 and shown' in detail in Figs. 10 and 11, the bearing sleeve25v being carried by a stem 26 having a cross head 27' arranged in depending guides 28 and yieldingly held in place-"by cushioning springs 29 'and 3 0 arranged -respectively above and below the cross head. The transmission shaft also is preferably provided at van intermediate point with a universal joint 31.

When thedrive pinion 13 is in engagement with the drive gear 14, motion may be communicated to the driving wheels oftremitiescarry the bevel pinions 34 adapted to mesh with gears 35 which are provided with interior threads, asA shown in detail in Fig. 3, to constitute feed nuts for engagement with thethreaded stems or feed screws -36 of the lifting ljack units or members, one

of which is located. adjacent to each wheel of the car,that.is one adjacent to each end ofthe rear aXle and one at each end of the front aXle as indicated clearlyin Fig. 1 of These jack screws respectively are mountedon bases v37 adapted to be placed in contact with the ground or surface by whichthe automobile or like vehicle is supported, and extending upward therefrom are the guide rods 38 extending through suitable v guidesrl) onthaframe of-:fthe-can to permit of vertical movement of the bases while preventing rotation thereof with the feed screws, or lateral displacement by reason of the operation of said-feed screws.

The pinions 34 are preferably keyedas at 40 to the counter shaft-'to provide for their movement into and out of engagement with -the feed nuts 35, and independent adjustment 'of said pinions maybe effected by lmeans of bell crank levers 41 connected by rods 42 with suitable hand levers 43 located conveniently near the drivers station or seat of the car or vehicle. Obviously eitherl feed 1,., nutf'3'5 may thus'be'geared to its respective member of tliexcounter-shaft, and both mem-l bers ofthe counter-shaft may be operated l rasaeo by the engagement of the double pinion 13 with4 the `pinions 16 located atthe inner ends of said members of the counter-shaft, to the end that the entire rear portion of the vehicle may be elevated, or by the manipulation of one of the hand levers 43, either of the feed nuts. may be released by disengaging the related pinion 34 therefrom,

so that only one feed nut may be operated .to raise a single wheel of the vehicle, or

that end of the axle which carries a wheel `requiring repair or the replacement of a tire.

The feed screw 36 of the jack stem is -provided with independently revoluble or idle v sections 44 and 45 located respectively at the upper and lower ends of the fixed portion of thefeed screw and consisting of sleeves which are adapted when the feed i nut engages the same to turn therewith so as to limit the upward and downward movement of the jack members or units to prevent the depression thereof beyond a certain limit or the elevation thereof beyond that which is necessary to completely withdraw the base portion of thejack from the ground and' house the body portion of the same in suitable inconspicuous relation with the `body of the car, ready for extension at any time to perform the functions for whiph they are designed, merely by the manipulation of means by which motion may be com- `municated thereto from the drive shaft of ther vehicle. Arllhe loose or idle screw sections -may be locked against movement in one direction to enable the feed nut to pass therefrom to the stationary portion of the screw by means of ratchets, consisting'in theu construction illustrated of dogs 46 (see Figs`.`5 and 6), for engagement with ratchet teeth or seats 47 (see also Fig. 4), the disposition of the elements being such that when the dogs engage the teeth the threads of the loose feed screw sections will be in registration with those of the fixed section so that the nuts may pass freely one to the other. lThe ratchets of the sleeves 44 and 45 are arranged to operate in reverse directions, so that with the feed nut engaged with the upper sleeve 44 the rotation of the former tending to raise the feed screw-will cause the locking of the sleeve, and with the feed nut engaged with the .lower sleeve, the

vrotation thereof tending to eX'tend the feed -downward or extension lmovement of the feed screw. The beveled gears 1.6 which are carried by the inner ends ofthe members of the counter shaft 17 are also keyed, as indicated at 48 1oA y grooved hubs 52 of said gears 16 (see Fig; 2)

and a stem 53 extending through said tubu' aeeaeeo to said shaft members to the end that eitherA lsaidl gears v16, and in order to effect lthe movement-of the pinion 13 and of said gears 16 there is provided a tubular rock shaft 49 having a cross head 50 of which the arms are connecte'dby shifting arms 51 with 'the lar roclr shaft. and provided at its` rear end with an arm 54 .engaged with the groovcd 'l5 hub or sleeve 55of the pinio'n'13.V Preferably these'elements, namely'the rock shaft and stem, areprovi'ded with universal joints indicated at 56 tocompensate for relative movement of the chassis and. body of the car, said members being connected vviththe g elementsofa controlling leverindicated at- 57 which is pi y arranged vvithincondriver, as; indicated, in

venient reach ov ontrn'llinglever consists of a hand 14), having aloclring'pa-Wl or dog 59 Vfor engagement .with .al toothed segment 60 and carryingapintl engagi'id with a transverse guide loo'p .'62 at the frnt end of' thev stem 53.-y Carried bythe forward end of the rock shaft. 49 is a crank arm 63 extending through anopening- 64 in the hand lever, so that by longitudinal swinging movement of the Ahaiid'lever parallel with the plane of the toothed segment 60 the stein 53 may be longitudinally ,shiftedy to cause the shifting of the pinion 13 into and out of. engagement either with the drive'gear, 14 or the lgears 16, .provided the latter are positioned in the path of movement o'fsaid pinion, While by n the lateral swinging movement of the hand lever, to thus actuate the crank arm 63, the roclr shaft 49 may be turned Vto causeeither the inward or outward shifting of the gearsV -16 upon the member of the counter shaft 17 to effect engagement or disengagement thereof with relation to the'pinion 13. To allow for `the lateral swinging movement of the hand lever the segment 60 may be mounted 'for oscillatory movement by means of a rocker 65 which is indicated in F ig. 14. y

By the proper adjustment of the elements as indicated it Will-be obvious that either of the Wheels of the car may be elevated to -permit of the'repair thereof or the replacement of a tire, -or either end of the car may be raised to give access to boththe front Wheels or both the back Wheels, or the entire.

car may be elevated to relieve all of the tires of the Wei ht of the vehicle, as when the same is store or arranged in the garage for a protracted period. "Moreover by disconnecting the. driving pinion 13 from thel drive gear 14, the gears 16 being allowed to remain in their separated position, and locking the hand lever 58 in a position as lby means of al suitable pad loclrnot shown,

the vvehicle it is'not open tothe objection `of independent jacksoperating from the ground in that it is not necessary to. fully expand or stretch the Vsprings in order, to A raise the Wheels .from the ground and as aboveindicated a single Wheelmay be raised if desired lWhile the others are permitted to retain their position upon the ground.

Moreoverit' will be understood that any suitable antifriction bearingssuch as ball bearings may be used at points exposed to friction such as theV mounting of the yfeed nutsupon the feed-screws or jacks 10', `to

minimize the power necessary and reduce friction in the operation of the mechanism.

1 do not Wish to be understood as limiting myself to the specific details of construction {see)particularly Figs. 12, 13 and Land arrangement as herein described. and

' illustrated, as it is manifest that variations andvmodifications may be'made -in the features of construction and arrangement, in the adaptation of the device tovarious conditions of use, Without departing from the spirlt and scope of my invention and iin-l 1. In a jack for. motordriven vehicles, a

jack member having a screvvthreaded stem, with a plurality of idle rotatable sections, rotatable means mountedon said stem and engaging the screivthreads of the idle rotatable sections thereof and means for operatively connecting the .drive shaft of a vehicle with saidrotatable means.

f/ 2. In a ]aclr`for motor driven vehicles, a jaclr member having screivthreads, rotatable means engaging `said screvvthreadsg, means for operatively connecting the drive shaft of l a vehicle` with said-rotatable means and idle rotatable threaded sections for engagement by the rotatable means and means for supporting` said jack member. Q

3. 1n a jack for motor driven vehicles; a jaclr member having a screwthreaded stem provided at its lovver end with supporting means adapted to contact with the ground, rotatable means on said screwthreaded stem, means for operatively connecting. the drive shaft of alvehicle with said rotatable means, idle rotatable threaded sections on sai-d stein adapted for engagement by the rotatable means and ratchet mea-ns for locking 'said idle rotatable Vmeans against rotarymovement in one direction.

iso

4. In a jackfor motor driven vehicles, a jack adjacent each wheel of the vehicle, each jack having a stem with a plurality of idle screwthreaded sleeves, a rotatable gear for engagement with `the screwthreads of said sleeves an-d lindependently operable means for operatively connecting each of said rotatable lgears with the drive shaft of a vehicle. y

5. In a jack for motor driven vehic1es,j ack members adjacent the vehicle4 wheels .and each .provided with a' screwthreaded stem having a plurality ofl independently rotatable sections, a rotatable gear engaging said stem and sections, counter-shafts located at the front and naar ends of the vehicle and having 'gear connections with the rotatable gears, means for operatively connecting the .-rear counter-shaftV with the front countershaft, la pinion shiftalolyl mounted upon the l vehicledrive shaft for communicating mo'- tion to the rear counter-shaft and independy ent means for.coupling each rotatablegear' vwith its related counter-shaft. y

6. In a jack for motor driven vehicles, jackmembers having a feed screw provided'wth independently rotatable idle-sections atlthe upper andplower ends of the fixed portion o the'feed screw and consisting of s leeves,.

a4 feed nut or gear adapted to lengage said sleeves and turn therewith and limitthe upward and downward Vmovement of thecjack members, and means for locking the indestem consistin 'ing the said feed nut or or gear with-the drive shaft of a motorvehicle.- b l 8. In a jack for motor driven vehicles, ack

members havinga plurality of independently rotatable screwthreaded sections, means for supportingsaid jack members, a feed nut .orgear adapted to engage 'said plurality of .sections and-means for operatively connectgear with the drive shaft of a motor vehicle. l 4

9. In a jack for motor driven vehicles7 jackV members having a plurality of independently screwthreaded sections, means for suportinU said 'ack members means for 'Guiding the vertical movement of said j ackmeml bers, a feed nut or gear adapted to engage said plurality of sections and means for con-A necting 'the said feed nut or gear with th'e drive shaft of a motor vehicle.

In testimonyl whereof I have affixed my signature.

EDWARD M. SCOTT. 

